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sudo certbot --authenticator webroot --installer nginx
select number
add webroot (path/to/app)
sudo service nginx restart

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http://stackoverflow.com/questions/22667401/postgres-json-data-type-rails-query
http://stackoverflow.com/questions/40702813/query-on-postgres-json-array-field-in-rails

#payload: [{"kind"=>"person"}]
Segment.where("payload @> ?", [{kind: "person"}].to_json)

#data: {"interest"=>["music", "movies", "programming"]}
Segment.where("data @> ?",  {"interest": ["music", "movies", "programming"]}.to_json)
Segment.where("data #>> '{interest, 1}' = 'movies' ")
Segment.where("jsonb_array_length(data->'interest') > 1")

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mkdir path/to/frontend
mkdir path/to/backend

add to /etc/nginx/sites-enabled/frontend

 server {
   location ~ /.well-known {
     allow all;
     default_type "text/plain";
     root path/to/frontend;

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<%= from_for(@your_instance) do |f| %>
   <%= button_to 'submit', '', { class: 'btn', onclick: "reCaptcha('your_action')" } %>
   <%= f.submit 'hide this btn', class: 'hidden', id: 'submit_this_form' %>
<% end %>

<script src="https://www.google.com/recaptcha/api.js?render=<%= ENV['RECAPTCHA_SITE_KEY'] %>"></script>
<script>
  function reCaptcha(action) {
    event.preventDefault();
    grecaptcha.ready(function () {

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Add Git Branch Name to Terminal Prompt (Mac)

Open ~/.bash_profile in your favorite editor and add the following content to the bottom.

# Git branch in prompt.

parse_git_branch() {

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python -m SimpleHTTPServer 5000

# Thank you, Benjamin Oakes
# http://www.benjaminoakes.com/2013/09/13/ruby-simple-http-server-minimalist-rake/

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#Cucumber and Capybara - Behavior Driven Development

##Overview

Cucumber allows software developers to describe how software should behave in plain text. The text is written in a business-readable, domain-specific language. This allows non-programmers to write specific feature requests that can be turned into automated tests that drive development of the project.

Capybara is the largest rodent known to man.

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After automatically updating Postgres to 10.0 via Homebrew, the pg_ctl start command didn't work.
The error was "The data directory was initialized by PostgreSQL version 9.6, which is not compatible with this version 10.0."

Database files have to be updated before starting the server, here are the steps that had to be followed:

# need to have both 9.6.x and latest 10.0 installed, and keep 10.0 as default
brew unlink postgresql
brew install [email protected]
brew unlink [email protected]
brew link postgresql

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{"lastUpload":"2020-01-19T18:59:50.579Z","extensionVersion":"v3.4.3"}

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require 'rails_helper'

RSpec.describe TodosController, :type => :controller do

  describe "GET #index" do
  #describe "POST #create" do
  #describe "GET #show" do
  #describe "PATCH #update" do (or PUT #update)
  #describe "DELETE #destroy" do
  #describe "GET #new" do